S-90096A443 3/8"-16 x 3/4" ASME B18.6.3, SAE J933 Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction for extended service life in demanding industrial environments
• Enhanced vibration resistance through serrated locking flange design that prevents loosening under dynamic loads
• Optimized thread engagement with UNC coarse threads that provide faster installation and stronger holding power in various materials
• Efficient installation with external hex drive design allowing for high torque application and quick assembly
• Versatile material compatibility specifically engineered for aluminum, brass, cast iron, and sheet metal applications
• Complete thread coverage with fully threaded shank ensuring maximum grip length and uniform stress distribution
• Precision drilling guidance with recommended R drill bit size (0.339") for proper hole preparation and optimal performance

Professional Applications & Engineering Value

This 3/8"-16 UNC zinc-plated steel flanged tapping screw delivers exceptional engineering value in industrial fastening applications. The thread cutting design eliminates the need for pre-tapped holes, significantly reducing installation time and labor costs in production environments. The serrated locking flange provides reliable vibration resistance critical for machinery, equipment assembly, and automotive components where dynamic loads are present. Manufactured from zinc-plated steel, these screws offer superior corrosion protection while maintaining high tensile strength. The coarse UNC threads ensure optimal performance in softer materials like aluminum and sheet metal, preventing stripping while providing strong, durable connections. The integrated flange distributes clamping force evenly, reducing surface damage and improving joint integrity across multiple industrial applications.

Specification Summary & Compliance

This flanged tapping screw features precise 3/8"-16 UNC coarse threads with Class 2A thread tolerances ensuring consistent performance and interchangeability. The screw meets ASME B18.6.3 specifications (SAE J933) for dimensional accuracy and mechanical properties. Compliance with RoHS 3 (2015/863/EU) standards ensures environmental responsibility and regulatory acceptance for global industrial applications. The screw's fully threaded design and blunt tip configuration provide controlled penetration and reliable performance in specified materials including aluminum, brass, cast iron, and sheet metal.